June 4 is the 10th Anniversary of the Linnaeus Teaching Garden in Woodward Park. And starting at 9 a.m., the first 500 visitors to the garden will receive a free one-gallon Nantucket Blue hydrangea.

Here’s why hydrangeas are having a banner year on the East Coast and how you can enjoy them. By Hank Sanders Horticulturists, gardening enthusiasts and tourists from far away have all taken note: This ...